Phonograph.



inn.

' UNITED STATES PATENT orrlon.

Burner 1). sonoomuax'mx, or Purser- NEW JERSEY.

To. all whom it may concern lieit known thatl. Bonner I). Sermonnu,acitizen of the United States, and a nt. of Plainfield, in the; countyof and State of New Jersey, have ineertain new. and useful Improre-Phoi-mgraphs, of which the following is a specification.

.Flho' pre ent invention relates to talking or achines aud moreparticularly to the con "struttion and mounting of the soundconre; ingitube or tone-arm employed on such machines.

The main object of the invention is to .provide a simple and inexpensiveway of mounting a tone-arm on the casing of the talking machine so as togive it the required freedom of inorement in planes parallel and atright angles to the surface of the record. I With these and otherobjects in view, which will niore fully appear as the nature of theinvention is better understood,the same consists in the, muuhination,arrange uncut. and construction'of parts hereinafter descrilaal. pointedout. in the appended claims and illustrated in the accompanyingdrawings,- it being understood that many changes may he made in the sizeand proportion of the several parts and details of construction withinthe scope of the appended claims without or sacrificing any of theadrantages invention.

One of the many possible ei'nbo'dilnents of the'invention is illustratedin the accompanying drawings. in which, i 1.

Figure 1 a side elevation, partly in section, of a tone-arm constructedin, 'icordance' with the present invention; and Fig. 2 is asECtiOutaken-on line :2--2 of Fig. 1.

U i In the drawings, the numeral indicates the horizontal top=of atalking machine cascarr-ying, in the well-known manner, the. usualturntable for supporting a disk sound record (not shown). Above therecord support, to cooperate with the record, is a suitable sound-box orsound-re iroducer, rigidly connected with the free smaller end 11 ot' ,atapering tone-arm 12, with which it communicates. The free end of thetonedeparti'hg from the spirit arnl extends in substantially horizontaldircction andxthe larger end 13 is curved downwardly through an arc ofabout 90 degrees,

"he larger end of the tone arm extends into a tubular body i l, whichprojects above Specification of letters Patent. implication filed A rns, 1913. Serial No. 227.2451

"fixed position, for instance.

of the .port.

tone-arm, so as to pernnt the swing up and down.

' swing 'plane, as shown in PHQNOGRAPH.

Patented-Oct. 15,1913.

the casing top l0. and is provided with a flange 15, preferablyintegrals therewith,

said flange resting upon the upper surface of the casing top and beingheld thereon .in .60

by, screws 1th.. The tubular body registers with an opening 17 in thecasing top, the said opening, in turn. 'comn'lunicating with the usualhorn that is disposed within the casing, The outer diameter of thelarger end of the tonearm is slightly smaller than the inner diameter ofthe tubular body 14, thereby permitting of a movement of said tone-armin a. vertical plane.

For supporting the tone-arm upon the tubular body 14, thereis providedwithin the said tubular body a spider 18, having. centrally arrangedaperture 19, through "which extends the reduced end 20 of a spindle 21.A portion of this spindie is disposed ahovethe said spider, and extendsthrough a. circular aperture 22 in a spider 23, the latter being fixedto the larger end of the tonearm. The diameter of the aperture 22 is sub80 stantially larger than the diameter of the body portion of thespindle 21,-tHrebypermitting of a free movement of the-'tone-a'rm uponthe said spindle. To the spindle 21' is fixedly attached an upwardlyextending vertical support 24, madeof spriinlgi wireand carryingiuponits upper f eenkliagcylindrical head on This headislseatiedflin a Races26 in the tone-arm, a screw 27, extendin through the said tone-arm into.the said heat servinggto hold the tone-strut up'on itssu .Thisscrew,'bears'loo'sl agdihst' Ea latter to' tnrii around its support. VThe. wire 24 is heevy eiiough t' balance thev'veight of the tone-armand? he sound-box or reproducer carried thereloj but, at the same time,is resilient enough permit the tone-arm 'to swin ,i h 'plahes'gat rightangles to the surface 0 the recordQas 100 the needle on the sound boxziscan The operation of this dev'ice is as! l(.rws:-The sound-box, in.followin'gtrack of the record, causes theme-a:

in a plane parallel "to' tho-jrecor around the head 25 of its supportkglmuch as this head is yieldinglysillp oi-ted is obvious that the tone-armis a opted dotted-"lines in- Fig 'lfhe resilient support, I

of the drawings.

causes, however, the needle 'on the sound llOXjllVilfH m remain incontact with the record.

hat I ('luim is I. In a talking machine, the COllllJl DHtiOll with atubular body. of a spider lixml -there 1 m n flexible up\\':u' llextending supporton Hllll spider having a .rylincli'im l lleul on itsfree upper owl, and a. tubular i20110-flr111 extending-into said tubularbu ly and rotatably mounted 1pon sa irl howl, HuKinner rlial'neter ofsaiil tubular body being inn-gen tlmn'the outer (lim'nefviof the portionof the lone- :uin extending iiito said tnhulzx 1- lNHly.

ln :1 talking machine, the combination with :1 iubulznwhgnly, ofspiderllXlll .llHi-l'bin, :in illnva nlly i-ixleu'rling wire on snirl spirlurhaving a ('ylinlli'icnl ll( 2lll on it;- upper free end, and a tubulartonearm extendi into said tubular body-mid rotatably l nou'git outerdiameter of the portion of the tone: arm extending into said tubularbody.

3. In a talking machine, vthe combination 'with :1 tubular body, of atubular tone-arm,

:lml flexible and elastic support-ing means (:IIIlGfl by sznrl tubularin engagement with sald-ltone-aii'n pern'uttlng the latter to rotatewith respect t-qsuld tubular body and also to 'n1o\'e in :1 \mlil calplane in rela thereto.

Signed at New Yoi k, in the county of New York, and State ofNew York,this 3rd day o-t'Apri1A.I).1918.- i

4 ROBERT D. SC HOONMAKER.

"20 ed upon said head, theinner-diameteifliof" -said tubular body beinglarger than'th'

